LSD at least from what I gather.
I would imagine some negative camber up front would help a good bit.
I use higher air pressure in rear to get back to rotate as front pulls out. You brake harder (stab) for short time and get back on the gas before apex.
First, are we talking about initial turn-in, from the turn-in point to the apex, or are we talking all the way through the turn? The first one is called turn-in, the second is plain old understeer.
For better turn-in, trail-braking will help. It's a difficult skill but works wonders and there's no installation. :-)
Also, toe-out on the front wheels will aid turn-in. It's also pretty easy to install. :-)
To combat understeer, over-inflate the rear tires. That's easy to do. A better solution is to increase stiffness in the rear suspension. Either springs or anti-roll bar is easy to do.
If the car is balanced until you try to accelerate, then you need a good LSD.
David
DWNSHFT wrote: To combat understeer, over-inflate the rear tires. That's easy to do. A better solution is to increase stiffness in the rear suspension. Either springs or anti-roll bar is easy to do.
Not being a jerk, but overinflating the tires is increasing suspension stiffness. Everyone forgets that the tires are part of the suspension as just big ol' air springs. Of course, just increasing tire inflation has its own separate set of side effects apart from increasing suspension stiffness, which is why increasing the spring rate or anti-roll bar size (for this purpose probably the latter is better) is a better overall solution, fewer compromises.
I was going to say toe-out also. 1/4" is what I had on my Saturn and the turn-in was telepathic. It was borderline violent. Toe is how the wheels are facing when the steering wheel is straight forward. Zero toe is the tires are perfectly straight, perpendicular to the front of the car. Toe-out is when the front of the tires are, you guessed it, pointing out slightly, the fronts of the two tires farther apart than the rear. Toe-in is the opposite.
The thing with toe-out on a road car, it makes them really twitchy, especially on the highway, so I would recommend starting at zero toe for a road-going car, which would still be an improvement, because most stock alignment specs have some toe-in.
And tire wear will be affected, most likely, if you go above zero toe. But my Saturn was a auto-x-only vehicle, tire wear was not on my radar
As actual modifications go, a stiffer rear sway bar if necessary, but front toe-out and proper tire pressures are good tweaks. Also if your factory alignment is rear toe-in, you should run zero toe on the rear. Some really daring people even run rear toe-out.
im running a 24mm rear sway bar on my civic. it feels pretty nice. but i think an lsd would help more. that comes with money later...
On my 91 Civic Si for STS I had a conservative 1/8" toe out front and 0 toe rear. Not as twitchy as 1/4".
If you are concerned about tire wear you shouldn't be racing :)
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